Single crystals of digadolinium monooxygen diselenide, Gd2OSe2, have been obtained from a KBr flux. The compound is isostructural with the low-pressure form of Dy2OS2. All atoms lie on the mirror plane of Pnma. The Gd environments are a GdO3Se5 bicapped trigonal prism and a GdOSe5 distorted octahedron. The two coordination polyhedra pack by face-sharing and edge-sharing to form a [Gd8/4O4/4Se8/8a-Se8/8i] fragment, which is the main motif of the structure. These fragments lie in the ac plane and form infinite chains parallel to c through the sharing of Se atoms around atom Gd1. In the a direction, these chains stack through the sharing of an Se atom around atom Gd2, thereby delimiting large pentagonal cavities.
|Original language||English (US)|
|Number of pages||2|
|Journal||Acta Crystallographica, Section C: Crystal Structure Communications|
|State||Published - Jun 1 2000|
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)